In the 25th century, Mars is home to millions of immigrants. This is because Earth was going to be overcrowded, and thus the colonization of a terraformed Mars was the only solution. The problem is, at some point, an unknown source of energy, located in the south pole, is discovered by the local government. All of a sudden, a declaration of independence arrives on Earth. What's going on? The Earth fleet goes to reveal it, with the new 'Mosquito fighters' acting as intruders...